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.W.-D. DAVIES.

- CLOCK PBNDULUM. No. 408,955. Patented Aug. 13, 1889.

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UNITED STATES PATENT OFFIC \VALTER D. DAVIES, OF BROOKLYN, NEYV YORK.

CLOCK-PENDULUM.

SPECIFICATION forming part of Letters Patent No. 408,955, dated August13, 1889.

Application filed March 27, 1889. Serial No. 304,983. (ModeL) To allwhom, it may concern:

Be it known that I, "WALTER D. DAVIES, of the city of Brooklyn, in thecounty of Kings and State of New York, have invented a new and usefulImprovement in Pendulums' of Clocks, of which the following; is aspecification, reference being had to the accompanying drawings.

This invention consists in apendulum having within it a rotating figureor body; and it further consists in the combination hereinafterdescribed and claimed, whereby an intermittent rotary motion is given tosaid figure or body by the oscillation of the pendulum.

Figure 1 represents a front view of the lower portion of a pendulumembodying my invention. Fig. 2 is'a vertical section of the same atright angles to Fig. 1. Fig. 3 is a diagram illustrating the operation.of the invention.

Similar letters of reference designate corresponding parts in all thefigures.

A designates a frame which takes the place of the ordinary pendulum-bob,and is suspended in any convenient manner from the pendulunrrod B.\Vithin the lower part of this frame A a horizontal spindle or arbor Cis arranged at right angles to the planes of oscillation of thependulum. This spindle or arbor may be supported in any convenientmanner which permits it to rotate freely. It is represented as supportedbetween two center screws a, which are screwed through the sides of theframe A. On this spindle or arbor 0 there is secured a figure or body D,which may be of any form or design, the axis of the said spindle orarbor passing through the center of gravity of the figure or body, sothat the latter maybe perfectly balanced. Near one end of the saidspindle or arbor there is secured upon it a ratchet-wheel b. Pivoted bya pin d to one side of the frame A, at a point at some distance abovethe spindle or arbor C, is a pawl c, engaging with the ratchet-wheel b.

As the pendulum swings in one direction the pawl slips over the teeth ofthe ratchetwheel without turning it, and consequently there is then norotary movement of the figure or body D; but as the pendulum swings inthe opposite direction the pawl, engaging with the teeth of theratchetwheel, turns it a short distance, and so produces a rotarymovement of the spindle or arbor and the figure or body D. The directionof the motion depends upon the direction in which the teeth of theratchet-wheel are set.

The operation is illustrated by the diagram Fig. 3, in which suppose cto be the center of suspension of the pendulum, f the center of thespindle or arbor C, d the center of the pivot of. the pawl, h the pointof contact between the pawl and the ratchet-wheel, and 2' an imaginaryline drawn through the center f and the body D, and suppose the teeth ofthe ratchet-wheel to have, as shown in Fig.

2, the faces of the teeth above the spindle or arbor C presented to theright hand. As the body D swings the inertia of the body tends toprevent its rotation while swinging with the pendulum. to the left, theabove tendency keeps the line 2' in a horizontal position,notwithstanding the change of position of the line 6 f d, the simplefriction of the pawl upon the teeth not being sufficient to overcomethis inertia and the pawl slipping back over the teeth; but when thependulum swings in the opposite direction this inertia is overcome bythe engagement of the pawl with the teeth of the ratchet, and as theangle between the line 'i and the line 2 d f continues the same the pawlturns the ratchet to bring the line ito the position shown at the rightof the diagram, thus communicating a portion of a rotation to the figureor body D. \Vhen the pendulum swings to the left again, the line icontinues at the same inclination to the hori zontal as is shown at theright of the diagram, and the pawl slips over the teeth of the ratchetto take a new hold for producing another portion of a rotation of thefigure or body during the movement of the pendulum to the right.

WVhat I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination, with a pendulum, of a rotating figure or body havingits axis of ro- When the pendulum swings tntien horizontal and sit rightangles 10 the balance of (lSfilllli lOll of the pendulum, substantiallyas llGlOlll described.

9. The combination, with a pendulum, of zL rotary spindle 01'Li-b0]?supported in the pond nluni, with its axis at right angles tolllO balance of oscillation OfLll0PCll(ll1lLl11l,L figure 01' bodymounted on said spindle Ol' arbor, :1

ratchet-wheel fast on said spindle er :u'lmr, and a pawl pivel'ed lo thependulum and en- 10 gaging Willi said 'i'nt(':li(1;-\v]ieel,substantially and for the purpose liei'eiu set forth.

\VALTER ll). DAVIE. YViLnesses:

HERBERT (J. SMITH, CHARLES R. MILLER.

